JSON Schema 2020 transition

[darakian]

Capturing this from the community call today as there seemed to be broad interest in moving the spec from the 07 draft to json schema 2020. There is an open issue that at least golang does not have good support for the new version of the spec. So, we should

1. Iterate a list of languages/tools we care about (please simply append to this issue)
2. Iterate a list of libraries we want to improve/update to support the community as we move to 2020
3. Update the spec docs once 1 and 2 are done.

[mjherzog]

The current proposed JSON schemas in #514 are set to:

"$schema": "http://json-schema.org/draft-07/schema#",

draft-07 is the version used for CycloneDX.

There are recommendations to upgrade to https://json-schema.org/draft/2020-12. There are also concerns about support for the newer json-schema version in open source tools.

This issue is intended to document the choice of the json-schema version for the PURL v1.0 Ecma Standard

[mjherzog]

The plan is to continue with "$schema": "http://json-schema.org/draft-07/schema#", for the PURL v1.0 Ecma Standard because draft-07 supports the current schemas and we do not have time or resources to complete an impact assessment for upgrading to https://json-schema.org/draft/2020-12 in the timeline for submitting PURL v1.0 for Ecma standardization in 2025.

[mjherzog]

Converting to a discussion for future versions of the PURL schemas.